Mathemateg TGAU : y llyfr gwaith haen sylfaenol : gyda llyfr atebion /
Parsons, Richard.
Steele, Mary.
University of Wales, Aberystwyth.Centre for Educational Studies.
Aberystwyth : Y Ganolfan Astudiaethau Addysg,
2002.
Addasiad Cymraeg gan Mary Steele = Welsh adaptation by Mary Steele.
Argraffiad Saesneg gwreiddiol = Original English edition : Coordination Group Publications, 2001.
Mathematics